Follow each step carefully.
Place the top speaker back into its compartment, ensuring it fits correctly.
Use a Phillips screwdriver to tighten the screws on the top speaker.
Align the speaker connector with the motherboard and press it down firmly.
Align the back cover with the device and press it down until it clicks into place.
Use a Phillips screwdriver to tighten the screws on the back cover.
Press and hold the power button for 3 seconds to turn the device back on.